Divisibility Rules for Integers Flashcards
1
Q
If the integer is even…
A
Any even number, by definition, divisible by 2.
2
Q
If the sum of the integer’s digits is a multiple of 3…
A
It is divisible by 3.
3
Q
If the integer ends in 0 or 5…
A
It is divisible by 5.
4
Q
If the sum of the integer’s digits is a multiple of 9…
A
It is divisible by 9.
5
Q
If the integer ends in 0…
A
It is divisible by 10.
6
Q
If a number is divisible by 2 TWICE
A
It is divisible by 4.
7
Q
If a number is divisible by 2 THREE TIMES
A
It is divisible by 8.
8
Q
If the integer is divisible by BOTH 2 and 3
A
It is divisible by 6.
